Search for an H-Dibaryon with a Mass near 2mΛ in Υ(1S) and Υ(2S) Decays

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105808

Title:	Search for an H-Dibaryon with a Mass near 2mΛ in Υ(1S) and Υ(2S) Decays
Authors:	陳鎰鋒;Kim, B H;Olsen, S L;Adachi, I;Aihara, H;Asner, D M;Aulchenko, V;Bay, A;Belous, K;Bhuyan, B;Bonvicini, G;Bozek, A;Bračko, M;Browder, T E;Chekelian, V;Chen, A;Cheon, B G;Chilikin, K;Chistov, R;Cho, I-S;Cho, K;Chobanova, V;Choi, S-K;Choi, Y;Cinabro, D;Dalseno, J;Doležal, Z;Eidelman, S;Epifanov, D;Esen, S;Farhat, H;Fast, J E;Gaur, V;Ganguly, S;Gillard, R;Goh, Y M;Hayasaka, K;Hayashii, H;Hoshi, Y;Hou, W-S;Hsiung, Y B;Hyun, H J;Inami, K;Ishikawa, A;Itoh, R;Iwasaki, Y;Julius, T;Kah, D H;Kang, J H;Kapusta, P;Kato, E;Kichimi, H;Kim, H J;Kim, H O;Kim, J H;Kim, K T;Kim, M J;Kim, S K;Kim, Y J;Kinoshita, K;Klucar, J;Ko, B R;Kodyš, P;Korpar, S;Kouzes, R T;Križan, P;Krokovny, P;Kumita, T;Kuzmin, A;Kwon, Y-J;Lange, J S;Lee, S-H;Li, J;Li, X;Li, Y;Libby, J;Liventsev, D;Matvienko, D;Miyabayashi, K;Miyata, H;Mizuk, R;Mohanty, G B;Moll, A;Muramatsu, N;Mussa, R;Nakano, E;Nakao, M;Nedelkovska, E;Ng, C;Nisar, N K;Nishida, S;Nishimura, K;Ohshima, T;Okuno, S;Pakhlov, P;Pakhlova, G;Park, H;Park, H K;Peters, M;Petrič, M;Piilonen, L E
Contributors:	理學院物理學系
Date:	2013-05-31
Issue Date:	2026-04-23 12:53:54 (UTC+8)
Publisher:	American Physical Society;United States: American Physical Society
Abstract:	摘要： We report the results of a high-statistics search for H dibaryon production in inclusive Υ(1S) and Υ(2S) decays. No indication of an H dibaryon with a mass near the M(H)=2m(Λ) threshold is seen in either the H→Λpπ(-) or ΛΛ decay channels and 90% confidence level branching-fraction upper limits are set that are between one and two orders of magnitude below the measured branching fractions for inclusive Υ(1S) and Υ(2S) decays to antideuterons. Since Υ(1S,2S) decays produce flavor-SU(3)-symmetric final states, these results put stringent constraints on H dibaryon properties. The results are based on analyses of 102 million Υ(1S) and 158 million Υ(2S) events collected with the Belle detector at the KEKB e(+)e(-) collider. 其他題名： Phys Rev Lett 出版者： United States: American Physical Society 出版日期： 2013-05-31 出處： Physical review letters, 2013-05, Vol.110 (22), p.222002 資源來源： American Physical Society Journals 識別號： ISSN: 1079-7114 識別號： ISSN: 0031-9007 識別號： EISSN: 1079-7114 識別號： DOI: 10.1103/PhysRevLett.110.222002 識別號： PMID: 23767713
Appears in Collections:	[Department of Physics] journal & Dissertation

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